Police arrested Garrett Karlin at his home in Murrieta on Nov. 20. The 23-year-old was a part-time employee of Murrieta Valley Unified School District. He worked as a summer camp band coach.
Investigators say he developed a personal friendship with a 15-year-old band member which lasted for over a year. Police say Karlin also worked as the victim's private music teacher.
The alleged molestation took place off campus and away from school activities.
Karlin was booked at Southwest Jail for multiple counts including sexual battery, child annoyance or molestation and offering to distribute harmful matter to a minor.
If you have any information about this case, you're urged to contact Murrieta police.